The SF Giants need to get a new manager, but once that matter is taken care of they need to improve their roster. If they try to improve the roster through trade, they must hold onto these three prospects.
We know the Giants have struggled to land big free agents in the past which is why they may be better served making trades to improve the roster. There are already some teams out there that would make sense as trade partners given their situation and players they have who could boost San Francisco in key areas.